Electromagnetic pump



Jan.- l2, 19324. l.. wlNsoR ELE'cTRoMAGNETic Pim? Filed Jan. 20. 1930flag INVENTOR ATTORNEY Panarea Jan. 12, 1932 PATENT OFFICE Y IRWIN B.WINSOB, OF TULSA, OKLAHOMA lEIDECTBOLIAGEI'IFITIC :PUMP

`Application med January 2o, 1930. serial No. 421,966.

My invention relates to apparatus for pumping wells and moreparticularly to apparatus of that character including a solenoidtypemotor for direct operation of a well pump and adapted for heatingthe liquid petroleum accumulated at the bottom of the well; theprincipal object of the invention being to accelerate flow from the oilsand to the well through tubing leading romthe well, by dissolving theparaiiine and other oongealable contents which at normal welltemperatures tend to retard How of the oil.

In accomplishing this and other objects of the invention, I haveprovided improved details of structure, the preferred forms of which areillustrated in the accompanying drawings, wherein Fig.`1 is a vertical:section of an oil Well equipped with pumping apparatus in accordancewith my invention.

Fig. 2 is an enlarged, central, longitudinal section of the pump andmotor, showing the pump plunger and core member at the low er limit oftheir stroke. Fig. 3 is a similar view of the lower portion of themotor.

Referring in detail to the drawings: 1 designates an oil well extendingthroug cap rock 2 above the oil sand 3 to a shot hole 4, and lined withcasing' supported on the cap rock by a shoe 6, the upper end of thecasing being provided with the usual casing i head 7 supporting welltubing 8, in accordsulating couplings 16 having central openings 17 inaxial alignment with the housing sections.l y

The `upper section 13 of the motor housing is connected with a pumpbarrel 18 provided at its upper end with a container 19 with a checkvalvey19 at its top communicating with the tubing 8*', and a hollowplunger 2O sealingly engaging a'packinggland 21 in the container, andhaving a valved inlet 22.

Depending .from the lowerhousing sectionr is a nipple 23 provided with acoupling 24 for connection with the strainer 12, and fitted withy astanding valve 25 for checking return flow of luidto the strainer.

Inclosed in each housing section is a sole-j noid 26 including a spool27 secured in the respective sections by a clamping ring 28,v andcarrying an induction coil 29 preferably constructed of asbestosinsulated copper Wire for heating purposes, and having connectorbranches 30 connecting the coils to the `respective housing sections incircuit.

The openings 31 of the spools 27 register with the openings 17 of thecouplings 16 for receiving a reciprocable core" member 32 sealinglyengaged in packing glands 33 and 34 in the upper and lower housingsections.

The core member '32 comprises tubular magnetic sections 35 cooperativewith the solenoids and connected by non-magnetic sections 36, and theupper end of the member is connected with the pump plunger 2O foreffecting reciprocation of the plunger when the motor is in operation.

Leading from the induction coil of the upt per housing section is aconduit cable 37 eX- tendingthrough the casing head 7 and co'nnected incircuit with electric current supply lines 38 through an automaticsolenoid switch 39, whereby the circuit is intermittently opened andclosed `for supplying electric current to the solenoids.

In practicing with the apparatus as herein illustrated and described,the operation is as follows: -When the solenoids 26 are connected incircuit with the supply lines 38 by the switch 39, the induction coils29 are energized for heating the core' member 32 and the housingsections 13, 14 and 15, and magnetizing the solenoids. The Huid at thebottom of the Well is heated by its Contact with the heated h'ousingsections, causing the parafiine or other congealable content of thefluid tobe the pump plunger to be discharged through the tubing 8 andfowline 9 by continued reciprocation of the plunger.

It will be obvious that the lowered viscosity of the fluid and thedirect operation of the pump will accelerate displacement of the fluidfrom a well and with a minimum of power.

lVhat I claim and desire to secure by Letters Patent is: Y

1. In combination with well casing and tubing, a pump in the casingbelow the tubing havinga hollow reciprocable plunger, a solenoid motorin the casing below the pump including heat dispensing units, and ahollow core member operably. connected with l. said plunger, and anautomatic switch controlling intermittent delivery of electric energy tosaid motor to actuate the pump for pumping liquid from the well throughsaid hollow core and plunger. Y

2. In combination with well casing and tubing, a pump barrel below thetubing having a receiving chamber communicating with the tubing, ahollow, valved plunger in said barrel, a solenoid motor below saidbarrel including individual solenoids adapted for gening an outlet insaid receiving chamber, a solenoid motor below said barrel including aplurality of solenoids connected in circuit, a

`hollow core memberoperably connected with said plunger and includinginsulated magnetic sections responsive to respective solenoids, and asolenoid switch for automatically opening and closing the circuit tosaid motor to actuate the pump for pumping liquid from the well throughsaid hollow core and plunger.

5. In combination with well casing and tubing, a. pump barrel below thetubing having a receiving chamber communicating with the tubing, ahollow plunger reciprocable in the barrel having avalved inlet andhaving an outlet in said receiving chamber, apaching gland on saidbarrel sealingly engaging said plunger, a solenoid motor below saidbarrel including a plurality of insulated solcnoids connected inparallel circuit, a hollow core member operably connected with saidplunger and including insulated magnetic sections cooperating withrespective sole-'r noids, a packing gland on saidmotor sealinglyengaging said core member, and an automatic solenoid switch forintermittently opening and closing the circuit to said solenoids toactuate the pump for pumping liquid from the well through said hollowcore and plunger. s'.

In testimony whereof I alIiX my signature.

IRWIN B. 'WINSOR erating heat when energized, and a core memberresponsive to said solenoids and operably connected with said plunger,the core member having a through channel for delivery of uid through thesolenoids to said plunger.

3. In combination with well casing and tubing, a pump barrel below thetubinghavthe tubing, a hollow valved plunger in said barrel: a solenoidmotor below said barrel in.- cluding individual solenoids adapted forgenerating heat when energized, a hollow coreing a receiving chambercommunicating with

